A Model of a Penumbral Chromosphere
Abstract
A semi-empirical model of a penumbral chromosphere is presented which represents a specific region of the penumbra located approximately one-fourth the distance outward from the umbra-penumbra interface. The model is based on simultaneous observations of high-resolution spectra of CaII K, H, and λ8498 made over a sunspot penumbra (SPO 5007) with the Echelle Spectrograph at the Vacuum Tower Telescope at Sacramento Peak Observatory on 18 December, 1979.
- Publication:
-
Solar Physics
- Pub Date:
- May 1984
- DOI:
- 10.1007/BF00157241
- Bibcode:
- 1984SoPh...92..145Y
- Keywords:
-
- Atmospheric Models;
- Chromosphere;
- Line Spectra;
- Penumbras;
- Sunspots;
- Calcium;
- H Lines;
- K Lines;
- Temperature Distribution;
- Solar Physics;
- Overlie Column;
- Observational Feature;
- Spectral Profile;
- Formation Procedure;
- Line Formation